treatment  lat     lon       day  bottle  PO4     NO2     NO3_NO2  NH4       SiO2    
HLLT       -76.50  173.47    8    7       0.778   0.0575  7.46    0.927     82.76   
HLLT       -76.50  173.47    8    8       0.694   0.0566  6.72    0.500     85.86   
HLLT       -76.50  173.47    8    9       0.735   0.0536  7.63    0.444     85.06   
HLLT       -76.50  173.47    8    10      0.794   0.0334  7.10    0.510     85.36   
HLLT       -76.50  173.47    8    11      0.757   0.0454  7.09    0.465     86.96   
HLLT       -76.50  173.47    8    12      0.749   0.0463  7.30    0.689     82.16